"Extreme Duty" HD-Series:

Designed and built to be the heaviest, fastest, and highest performing machines available in the world at any price, the Onsrud Extreme Duty Series CNC Router is truly our "No-Compromises" model. We start with the largest standard cast iron frame offered anywhere in our marketplace today. The massive "oversized" cast iron bridge on the HD Series has over double the cast iron of even our legendary C Series models. The "oversized" cast iron frame is then mated to our one-piece, self-supportive, heat-treated, stress-relieved and normalized, internally-reinforced, thick-walled, tubular steel base for unrivaled weight, mass, rigidity, durability, feeds and speeds. We then use only the highest-end, top-shelf, non-proprietary and readily available components in the world today to offer you the most technologically advanced Onsrud ever. Many of the standard features on the Extreme Duty may be options and/or upgrades on our other C.R. Onsrud models, but they are not even offered by the competition.

All Extreme Duty Series come standard with:

• An OSAI Series 10/510i Controller with color touch screen PC Interface.
• A 18HP Continuous Duty 4-Pole, Reversible, Main Router Spindle with up to 40HP liquid cooled available spindle options.
• An incredible 4000 + ipm machining speed.
• The extra large cast iron frame that it shares with our 5-axis models.
• Twin tables that can operate simultaneously or independently.
• 12 Position, Servo Controlled, Aggregate Ready, Dynamic Rotary Automatic Tool Changers.
• Larger available table sizes up to Twin 5"X10" tables and over 5"X20" overall.
• Optional revolutionary multi-head, Dual Process technology, available on all Extreme Duty models.

When you require unrivaled feed rates, machining speeds and rapid traverse rates, when your jobs demand the ability to run the largest diameter tool and take the deepest, heaviest cuts in the most dense and unforgiving materials, when you insist on the highest possible accuracy and repeatability, when you want the best possible machined finish that tooling can provide... if you want the lowest operating maintenance cost, the lowest number of occurrences and the shortest duration of downtime... when you want to have the assurance and satisfaction of knowing beyond a shadow of a doubt that you have purchased the biggest, heaviest, best built, fastest, most powerful, most durable and most productive machine available on the market today, then the C.R. Onsrud Extreme Duty Series is for you!

Optional Multi-Head Dual Process Technology:

Choose multi-head dual process technology for the most productivity a machine can offer - available on most HD Series models.

Imagine that you could take the heaviest, fastest and highest performing machine available in the world at any price and then double its performance. What if you could get the throughput of two complete machines out of a single machine footprint? How would you like the flexibility of being able to run two completely different programs at the exact same time on only one machine? Or to run two identical parts at the same time? With the optional C.R. Onsrud Multi-Head Dual Process Technology, you can do all of this and more.

Start with any Standard C.R. Onsrud Extreme Duty Series twin table model. Then add a second tool changer, a second main router spindle and our optional Individual Servo Control of Second Complete Spindle Slide from our list of available standard machine options. When teamed up with the dual process power and capabilities standard in our OSAI controller, you get our Multi-Head Dual Process Technology. Even additional drilling or boring blocks, aggregate tool changers or multiple c-axis can be added as options. In fact, this option is so flexible that the two heads could even be configured entirely differently!

With Dual Process Technology you will be able to:

• Use both heads on a fixed center distance as a twin-head machine, working on a single process (or part program).
• Use both heads on a frequently adjusting or varying center distance working on a single process requiring different center distance.
• Use both heads alternating or taking turns doing different operations while working on a single process that requires many short or complicated operations and/or has frequent tool changes.
• Use either head in a single process mode and fully cover both of the twin tables with head collision avoidance built into the logic of the controller.
• Use the first head to work on one process on the first table, while the second head works on an entirely separate and different process on the second table with built-in collision avoidance.
• Have the heads take turns machining the same process in either single or alternating table mode.

Name	Standard Sizes	Machine Series	Table Sizes	Spindle HP	Multi-Drilling	C-Axis & Aggregate	Multi-Heads
	(First Numbers in Model #)	(Center Letters in Model #)	(Approx Table Size)	(Next Number in Model #)	(Adds "D" to Model #)	(Adds C to Model #)	(Adds H & # to Model #)
Extreme Duty	98 122 148 194 244	HD-Series	5x8 5x10 5x12 5x16 5x20	18 20 40	4 Spindle 9 Spindle 13 Spindle 15 Spindle 28 Spindle	Optional w/Aggregate or C-Axis	Up to 8 on Fixed Centers or up to 2 with servo adjustable centers